Text repaint issues when zooming in on yosemite example WildFox believes this is caused by my fix to bug 15388. If that's true, it would suggest that <text> elements don't *quite* have the right repaint rects. One side-effect of bug 15388 was that repaint rects were always inflated 1px for every <g> enclosing an object. (Meaning it was real easy for your repaint rect to be off a few pixels and yet you'd still redraw OK.
I'm not able to reproduce this in Safari 4 or in ToT (r42966).